John loudon and hans iversen



UNTED STATE@ PATENT ORFEO@ JOHN LOUDON AND HANS IVERSEN, OFNEVV YORK, N. Y.

HINGE FOR WINDOW-BLINDS.

Specification of Letters Patent No. 21,347, dated August 31, 1858i.

To all whom t may concern:

Be it lrnown that we, JOHN LoUDoN andv HANS lvnRsEN, of the city and State oit' New York, have invented and made certain new and useful lmprovements in Hinges for Fastening Blinds Either Open or Shut;v and we do hereby declare that the following is a i'ull, clear, and eXact description ot' the said invention, reference being had to the annexed drawing, making part of this specification, wherein- Figure l, is a plan ot our said hinge as with the blind secured partially open; F 2, is a side view of the saine hinge as it' the blind were entirely open, and Fig. 3, is a vertical section of the said hinge.

Similar marks of reference indicate the same parts.

The nature of our said invention consists in the combination of a latch lever moving `with the blind hinge, with a notched plate on the fixed half of the hinge, whereby the blind can be retained in a partially or entirely open or shut position, and also in the manner of fitting these parts so that they can be applied to blinds already in use.

In the drawing a, is the iXed half of the hinge attached to the casing b, and C, is the moving half attached to the blind (Z, and moving on the pin f is a plate formed with a holein its center to pass the pin e, and with a thinner or countersunlr space to set over the fixed part a, of the hinge so that the plate is kept from turning by simply placing the same over the pin and with the part a, in the countersink.

g is a plate set-ting over the pin e, and receiving into a countersink in its upper surface the half hinge c, so that the two shall be connected and move together on the plate f.

7L, is a cam lever on a fulcruin Z, formed on the plate g on one part of the hinge, and extending back so as to be worked easily and the part 3 of said lever takes notches 2, 2 around the edge of the plate f retaining the blind either open or shut or at the desired intermediate points according to the' position otl the notches. The lever /z extends back and is bent so as to pass between the blind and the casing as shown, so as to provide for disconnect-ing the saine from the notches in said plate f when the blind shut and locked by said lever, and this lever may pass through a spring catch at f6, so as to be held up out of the way when not in use; or if it is not desired or convenient to have the lever bent to be operative when the blind is shut to lock the saine, the said lever may be made shorter so as to stop in the position shown by dotted lines, in which case it can be thrown over when not in use to be out of the way. le are thus enabled to apply our fastener to any hinge already in use because the thickness of the plates f and g see Fig. 3, is but very little and will scarcely raise the blind at all; and when new hinges are made, the respective parts can be formed with or attached to the parts of the hinge.

le do not claim a hinge formed with a latch to retain the blind, but- Vlhat we claim as our invention and desire to secure by Letters Patent is 1. The combination of the lever 7a, on one. part ot' the hinge with the notched plate j' on the other part, for the purposes and as specified.

2. le also claim the plates 7 and g, connected with the respective parts ot the hinge by the countersinls, and holding said hinge in the desired position by the cam lever 7i, and notches in the plate j" as set forth.

In witness whereof we have hereunto set our signatures this twenty ninth day of July 1858.

JOHN LOUDON. H. IVERSEN.

Witnesses LEMU'EL W. SERRELL, THOMAS G. HAROLD. 

